Research On Wireless Power Supply System For Medical Flexible Sensors

In recent years,the Internet of Things technology has developed rapidly,especially with the arrival of 5G technology,the Internet of Things has ushered in a golden period of development.Smart medical,smart home,smart city,and driverless technologies are inseparable from the Internet of Things,and flexible sensors are widely used in these technologies.Especially in the medical field,flexible sensors can be used for the prevention and treatment of many diseases.However,the power problem has been restricting the development of flexible sensor applications.At present,we are using traditional nickel-metal hydride batteries and lithium polymer batteries.Factors such as battery life,size and difficulty of replacement will limit the actual use of the device,especially the traditional batteries cannot meet the flexibility requirements of flexible sensors.In this case,wireless power supply technology has gradually entered people's field of vision.Among many wireless power transmission technologies,magnetic coupling resonance technology has become a research hotspot for its advantages such as long transmission distance and large transmission power.Based on the three-coil magnetic coupling resonant wireless power transmission technology,this paper designs and sets up a wireless power supply system for specific medical flexible sensor equipment,and optimizes the coil structure parameters of the system through MATLAB calculations and comparative experiments.The optimized wireless power supply system can still meet the power supply requirements of medical flexible sensors at a distance of 35 cm.Finally,a wireless voltage feedback system is designed and added to solve the problem that the energy at the receiving end will change with the change of the transmission distance,so that the receiving voltage can be stabilized within the set range.The work of this paper mainly explores the use of wireless power supply technology to power medical flexible sensors,systematically studies the power supply principle and engineering design issues,and provides a practical basic solution for wireless power supply of such sensors.